0. За курса, Ruby и Railst

Textclass RubyAndRails < Course  speaker "Стефан Кънев"  speaker "Николай Бачийски"end

06.10.2008, ФМИ

3

3Събирания във ФМИ

3Събирания във ФМИ

Събирания навън

3Събирания във ФМИ

Събирания навън

Сайт на курса

∀ понеделник и сряда

∀ понеделник и сряда

19:00 - 21:00

∀ понеделник и сряда

19:00 - 21:00

зала 200

http://fmi.rails-bg.net/

http://fmi.rails-bg.net/

•Домашни•Споделяне на код•Въпроси и отговори•Информация за курса

Догматичност(Не очаквахте испанската инквизиция, а?)

Оценки

200+• Отговори във форума

• Елегантни решения

• Втори проект през семестъра

• Допълнителни задачи

Ruby

Ruby Ruby

RubyRubyRuby

RubyRubyRuby

Ruby Ruby

RubyRubyRuby

RubyRubyRuby Web

Ruby Ruby

RubyRubyRuby

RubyRuby

HTTP

SQL

(X)HTML

CSSRuby Web

Ruby Ruby

RubyRubyRuby

RubyRuby

HTTP

SQL

(X)HTML

CSSRuby Web

Rails

Ruby Ruby

RubyRubyRuby

RubyRuby

HTTP

SQL

(X)HTML

CSS

Rails

Rails

RailsRails

RailsRails

Rails

Rails

Ruby Web

Rails

Ruby Ruby

RubyRubyRuby

RubyRuby

HTTP

SQL

(X)HTML

CSS

Rails

Rails

RailsRails

RailsRails

Rails

Rails

Ruby Web

Rails

Ruby

Ruby

Ruby

Ruby Ruby

RubyRubyRuby

RubyRuby

HTTP

SQL

(X)HTML

CSS

Rails

Rails

RailsRails

RailsRails

Rails

Rails

Ruby Web

Rails

JavaScript

Ruby

Ruby

Ruby

Ruby Ruby

RubyRubyRuby

RubyRuby

HTTP

SQL

(X)HTML

CSS

Rails

Rails

RailsRails

RailsRails

Rails

Rails

AJAX

JSON

Ruby Web

Rails

JavaScript

Ruby

Ruby

Ruby

Ruby Ruby

RubyRubyRuby

RubyRuby

HTTP

SQL

(X)HTML

CSS

Rails

Rails

RailsRails

RailsRails

Rails

Rails

AJAX

JSON

?

Ruby Web

Rails

JavaScript

Ruby

Ruby

Ruby

1995

Интерпретира се

aquarius@arrakis:~$ cat sample.rb require 'date'puts "Hello world"puts "The exact time is #{DateTime.now}"aquarius@arrakis:~$ ruby sample.rb Hello worldThe exact time is 2008-10-05T14:40:14+03:00

aquarius@arrakis:~$ irb 001:0> names = ["Stefan", "Nikolay"]=> ["Stefan", "Nikolay"]002:0> surnames = ["Kanev", "Bachiyski"]=> ["Kanev", "Bachiyski"]003:0> names.zip(surnames).map { |f,l| "#{f} #{l}" }=> ["Stefan Kanev", "Nikolay Bachiyski"]

Интерактивен шел (IRB)

Динамичен

ООП

ФП

+ =

Smalltalk

LISP

CLU

essay pic SICP

Programs must be written for people to read, and only

incidentally for machines to execute

Matz(Yukihiro Matsumoto, 松本行)

• Benevolent Dictator For Life• 43 годишен• Спокоен, приятен човек• Мормон

Интерпретатори

•MRI (Matz's Ruby Interpreter)• YARV (Yet Another Ruby VM)• Rubinus (вдъхновен от Smalltalk)• JRuby (сещате се)• IronRuby  

Платформа

2004-

MVC

Text

class User < ActiveRecord::Base validates_presence_of :email, :name, :birthday, :gender, :city validates_uniqueness_of :email, :case_sensitivity => false belongs_to :city has_many :comments, :dependent => :destroy has_many :received, :class_name => 'Message', :foreign_key => 'recipient_id' def self.authenticate(email, password) u = find_by_email(email) u && u.authenticated?(password) ? u : nil

Active Record

<% ERB %>

Controller

Controller

TDD

Migrations

Plugins

github

DHH(David Heinemeier Hanson)

• Създател на Rails• 28 годишен • Нахакан, арогантен тип• Дътчанин

I’m not here to create Rails for you. I’m here to create Rails for me and if you happen to like that version of Rails that I’m creating for

me, than you are going to have a great time

http://poignantguide.net/

category_sum = Hash.new(0)

File.open('spendings').each_line do |line| next unless line =~ /^\d\d\.\d\d\.\d{4}\s+\w+\s+[-0-9.]+/ date, category, amount = line.split category_sum[category] += amount.to_iend

category_sum.sort_by { |_, sum| -sum }.each do |category, sum| puts "#{sum} spent on #{category}"end

04.10.2008 lolcat 1004.10.2008 lolcat 1

05.10.2008 iMac 2375# I am getting compulsive05.10.2008 lolcat 20

06.10.2008 bet -20# Clayderman!!! 06.10.2008 tickets 60

# Let's never play poker again07.10.2008 bet 100

nb@creep$ ruby iamfrugal.rb 2375 spent on iMac80 spent on bet60 spent on tickets31 spent on lolcat

Text

def symmetric? points = Set.new @bricks.map(&:points).sum left, right, top, bottom = WIDTH * 2, -WIDTH * 2, HEIGHT * 2, -HEIGHT * 2 points.each do |x, y| left = [left, x].min right = [right, x].max top = [top, y].min bottom = [bottom, y].max end points.all? { |x, y| points.include? [right - x + left, y] } or \ points.all? { |x, y| points.include? [right - x + left, bottom - y + top] } end

Text

def try board, bricks if bricks.empty? board.print_me if ($c % 10000).zero? $c +=1 if board.symmetric? puts 'symmetric! '*100 p board board.print_me end #gets if board.symmetric? #board.print_me #puts "-" * 30 return end bricks = bricks.dup brick = bricks.pop brick.rotate do |rotation| board.put rotation do try board, bricks end endend

Ruby няма да ви нареди магнитите, но ще ви даде няколко безценни часа

забавление